Weather Instruments Test

1.

1 point

The rain gauge is usually recorded for a period of 48 hours.

True

False

2.

1 point

Where is the maximum and minimum thermometer usually placed?

Steven Gerrard Screen

Seven Screen

Stevenson Screen

Steven Screen

3.

1 point

The minimum and maximum thermometer is also known as the six's thermometer.

True

False

4.

1 point

What does the number in the middle of the wind rose represent?

Number of calm days.

Number of dry days.

Number of rainy days.

Number of humid days.

5.

1 point

What instrument is used to measure air pressure

Wind Vane

Sling Psychormeter

Thermometer

Barometer

6.

1 point

Which instruments measure wind speed?

Anemometer

Beaufort scale

Wind vane

Barometer

7.

1 point

How long should you swing the sling psychrometer before reading and recording the temperature on the wet bulb?

4 minute

3 minute

1 miniute

2 minute

8.

1 point

Where should you read in order to get the max and min thermometer?

highest point of each metal index

middle point of each metal index

Lowest point of each metal index

9.

1 point

After leaving the rain gauge for a period of time and recording the time at which the rainfall events start and end, what should be the next step?

Weigh the rainfall with the glass bottle and subtract the weight of the glass bottle.

Draw a marking on the glass bottle to mark the amount of rainfall collected.

Pour the collected water in the rain gauge into a measuring cylinder.

Use a meter ruler and insert into the glass bottle to measure the rainfall amount.

10.

1 point

When using a rain Gauge, an area where it is close to buildings or trees does not affect the collection.

True

False

11.

1 point

The minimum temperature was recorded to be 19 degree Celsius while the maximum temperature was recorded 26 degree Celsius, what is the diurnal temperature?

9

8

45

7

12.

1 point

Before using the barometer, what should you check?

Check that the movable pointer is arranged over the measuring hand.

No obstructions that may affect the reading.

Barometer should be placed 1.5 meter high.

Check that the measuring hand is arranged over the movable pointer.

13.

1 point

What must you do before using the sling psychrometer?

Dip the wick of the wet bulb thermometer in water

Dip the wick of the wet bulb thermometer in mecury

Dip the wick of the wet bulb thermometer in alcohol

Dip the wick of the wet bulb thermometer in soapy water

14.

1 point

If the dry bulb reading of a sling psychrometer is 29 Degree Celsius and depression is 8 degree celsius, what is the percentage of the relative humidity?

49

51

50

45

15.

1 point

Which of the following is not a part of a rain gauge?

Outer Casing

Funnel

Ground

Glass Bottle

Copper Cyclinder